Tobacco pipe



April 7, 1931.

R. KEPICH 1,799,909

TOBACCO PIPE Filed April 19, 1929 Fig;

I f m i F W i l Patented Apr. 7, 1931 UNITED sr rEs PATEN TOBACCO PIPEROBERT xnrron, or vmnnnnusrnrn Application filed April 19, 1929, SerialNo. 356,322, and in Germany April 27, 1928.

This invention relates to a tobacco pipe, the smoke tube of which isformed with a condensation surface of large area, by providing itsinternal wall with a helical thread after the manner of the interior ofa nut and further this invention relates to the particular mode ofarranging the said condensation surface with respect to the pipe bowland its connection with the latter.

In the accompanying drawing, Figure 1 shows a pipe according to theinvention in longitudinal section, and Figure 2 is a section on line AAof F i 1. Referring to the 7 said drawing, the pipe bowl 1 and thetubular stem 2 together with the mouthpiece 3 are made in one piece. Atthe bowl end of the stem 2 the latter is closed by a detachable stopper4. The numeral 5 denotes the in terior of the tubular stem 2. The entiresurface of the interior of this stem 2, or optionally only a portion ofsame, is made to constitute a condensation surface of large area, byproviding it with a threaded helical winding of considerable depth,after the man- 2 her of the interior of a threaded nut. The portions 6therefore correspond to the spaces between the convolutions of a screwfitting into this nut, they extend into the hollow space 5 and form arow of battle plates, stretching in a helical line from one end of thespace 5 to the other. v

This large condensation surface chamber can be produced by inserting ascrew of corresponding shape into the mould of the pipe which is to bemade, such screw, for example, being of iron, and having either one ormore turns. The material of which the pipe is to be made is cast orpressed in the mould thus prepared. A suitable material for the pipewould be bakelite. After the balrelite has been pressed in andthoroughly hardened, the screw is screwed out, this being easilypossible as the pipe has an opening in the direction of the long axis ofthe pipe stem.

The condensation space can, however, be formed by pressing a plasticmass into two half-moulds and suitably connecting the two moulded-halvestogether. The lower half 2a (Fig. 2) will be subjected to the impressionof half the thickness of a screw of appropriate length, shape and pitch,and after the screw has served as a pattern in this fashion, it isremoved from the plastic mass. half of the The other screw will then beused in like manner for moulding into the proper shape the interior ofthe upper covers the piece 2a. screw can be of one,

piece two or multip 2b wnich The pattern-serving le pitches,

a 3-pitch screw being perhaps preferable.

The two parts 264 and 2b are united for example, in Fig.

as shown,

2. For fastening to gether, it is recommended that the meeting parts bepainted with liquid resin which can be hardened by 'a channel having aninner surface formed like the in terior of a threaded nut. tween theridges of the screw used in shaping them,

The grooves be- 6 correspond to the threads and these ridges themselvescorrespond to the spaces between the threads of this screw, like a rowof baffle plates from one condensation tube to the other.

A. further object of the present extending end of the invention is theparticular arrangement of the hollow space 5 of the stem 2 with respectto the pipe bowl'l. Particularly the channel 7 establishingcommunication between the'hollow space 5 of the stem and the tobaccospace of the pipe bowl 1 of thehollow space 5, because this is not inalignment with the axis would not suh'iciently obstruct the passage ofair from the mouthpiece 3 to the tobacco.

Therefore according to my invention the communication channel 7 isdisposed at ang le, for instance a right angle, with respect to thethreaded channel 5 and the axis of the com munication channel isdisposed u the pipe bowl. Preferably the channel is arranged withrespect t nderneath threaded o the pipe bowl in such a manner, that itterminates in an air chamber 8. from which the branches off into thepipe bowl.

channel 7 Whilst the tobacco smoke is drawn through the passage 5prepared as stated,

it strikes.-

againstthe individual windings of the baffle plates andsets upcondensation.

Further;

more the smoke assumes a whirling motion, 7

which at the same time promotes t he deposit which is provided air isbeing drawn througlnthepipe, illth? usual wa air finds its way to thebowl in the direction just mentioned, which promotes combustion andconsequently develops heat. This undesirable entrance by the use of thenew condensation device, and as above, described 'can be still morereduced by arranging the channel 7 at an angle to the threaded channel5-as well as by pro viding the air chamber 8 between the channels 5 and7. The large condensation surface as described effects the smoke fromcondensation matter and promotes the cooling of the same without in anyway checking the flow of the smoke vae pours through the pipe.

' I am aware that it is not novel to provide the tubular stem of tobaccopipes with a number of circumferential serrations formed by a screwthread, But in my invention I make use of this knownarrangement bymaking the channel 7 pass into the stem at-an angle of for instance 90.By this the smoke is positively caused to make a sharp turn beforeentering the stem. Thereby a whirl-' ing motion isstarted in the smokewhich motion is enhanced by the screw threaded form of the inner surfaceof the pipe stem. By combining the two elements namely the pipe stemwith a screw threaded inner surface and the channel 7 in the above descrbedmanner I impart the smoke a whirling motion of far greater intensitythan could. be of the attained by only making, use of one citedelements.

I claim 1. A tobacco pipe comprising the combination of a pipe stem thelnner surface of which is provided witha screw thread after the mannerofthe interior of a threaded nut,

the axis of the said pipe stem passing underbowl, and-a channel'establishing communication between theI pipe.-

the bottom of the pipe bowl and the threaded interior of the plpe stem,the said v channel being disposed at an angle with respect to the axisof the said threaded interior.

2. A tobacco pipe comprising nation of a pipe with a screw thread afterthe manner ofthe interior of a threaded nut, the axis of the said pipestem passing under the bottom of the pipe bowl and a channelestablishing communication between thepipe bowl and the threadedinterior and .of an air thus a cleaning of stem the inner surface ofsignature.

ROBERT KEPICH.

